EP3317604A1 - Motor-driven aiming device and method - Google Patents
Motor-driven aiming device and methodInfo
- Publication number
- EP3317604A1 EP3317604A1 EP16734376.3A EP16734376A EP3317604A1 EP 3317604 A1 EP3317604 A1 EP 3317604A1 EP 16734376 A EP16734376 A EP 16734376A EP 3317604 A1 EP3317604 A1 EP 3317604A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- saturation
- support
- nominal speed
- motor
- difference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000000079 presaturation Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A27/00—Gun mountings permitting traversing or elevating movement, e.g. gun carriages
- F41A27/28—Electrically-operated systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G5/00—Elevating or traversing control systems for guns
- F41G5/06—Elevating or traversing control systems for guns using electric means for remote control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G5/00—Elevating or traversing control systems for guns
- F41G5/14—Elevating or traversing control systems for guns for vehicle-borne guns
- F41G5/16—Elevating or traversing control systems for guns for vehicle-borne guns gyroscopically influenced
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G5/00—Elevating or traversing control systems for guns
- F41G5/14—Elevating or traversing control systems for guns for vehicle-borne guns
- F41G5/24—Elevating or traversing control systems for guns for vehicle-borne guns for guns on tanks
Definitions
- the present invention relates to the pointing or the motorized orientation of an element in a predetermined direction and in particular the alignment of a weapon on a line of sight.
- a pointing device comprising a fixed frame and a steerable support on a steerable weapon system relative to a reference frame such as that of the vehicle carrying the weapon system in the case of a weapon system.
- the support of the pointing device is mounted on the frame of the weapon to be orientable around two axes of rotation, namely a site axis and a bearing axis, by means of two electric motors.
- These motors are controlled so as to bring and maintain the orientable support aligned in a direction corresponding to the line of sight determined by the service of the weapon.
- the recoil of the weapon When shooting, the recoil of the weapon generates a shock which causes a sudden rotation of the support.
- the motors are controlled to oppose this sudden rotation until the saturation of the engine control which limits the risk of damage to the electronics of the device but makes it impossible to maintain the alignment of the support on the line of aiming. There is then a shift between the actual angular position of the support relative to the line of sight.
- the engine control does not allow the engines to catch up quickly so that, in case of continuous shooting, there is a risk that the second shot, then the next, are further and further away from the target.
- An object of the invention is to provide a means to improve the accuracy of the alignment of a motorized support in case of shock or any other physical phenomenon resulting in saturation of the engine.
- a control method of a pointing device comprising a fixed frame on which is mounted a support to be orientable about at least one axis of rotation by means of at least one a motor, the support being provided with at least one inertial sensor of angular velocity around this same axis, the method comprising the steps of:
- the reference inertial position is the position in which the support was located just before the saturation of the engine. This position is measured via the inertial angular velocity sensor. With the invention, the nominal speed setpoint is increased to quickly bring the support back to the reference inertial position.
- the invention also relates to a pointing device, comprising a fixed frame on which is mounted a support to be rotatable about at least one axis of rotation by means of at least one motor connected to a control unit.
- the support is provided with at least one inertial sensor of angular velocity around this same axis, the control unit being arranged for:
- FIG. 1 is a schematic view of a pointing device according to the invention
- FIG. 2 is a schematic view of the motor control of the pointing device.
- the pointing device comprises a fixed frame 1 in which is mounted a support 2 for pivoting about an axis 3 here vertical.
- the frame 1 is arranged to be fixed on a carrier, a vehicle or a tank turret for example.
- the support 2 is arranged to carry the element to be pointed, a weapon or a pointing device for example, and is connected to the frame 1 by bearings coaxial with the axis 3.
- the support 2 is adjustable in angular position about the axis 3 by means of an electric motor 4 having an output shaft connected via movement transmission means to a ring coaxial with the axis 3 and integral with the support 2.
- the motion transmission means are, for example, gears, a belt, cables ...
- the motor can also be mounted in direct contact with the element to be driven and thus connect the frame 1 to the support 2.
- the support 2 is also equipped with an inertial sensor of angular velocity around the axis 3, namely a gyrometer 5.
- the electric motor 4 and the gyrometer 5 are connected to a control computer unit 6 arranged to execute a control program and having an interface allowing an operator of the pointing device to input data into the control program.
- the control computer unit 6 continuously records the angular velocity measured by the gyrometer 5.
- control program is illustrated in FIG. 2 in the form of a control chain generally designated at 10 and arranged to control the electric motor 4 as a function of a speed reference speed ⁇ calculated from data entered by the operator of the pointing device.
- the control chain comprises a main control loop 20 and a correction loop 30 which intervenes in case of saturation of the electric motor 4.
- the main control loop 20 comprises an element 21 for controlling the motors which determines the control parameters of the electric motor 4 as a function of a difference between a speed setpoint ⁇ 1 and a speed of the support 2, denoted ⁇ ⁇ .
- the speed ⁇ ⁇ is measured by the gyrometer 5.
- the correction loop 30 comprises an estimator 31 of a difference between a reference inertial position prior to saturation and a current inertial position and a corrector 32 arranged to correct the Rated speed setpoint ⁇ as a function of this difference.
- This correction is an integral proportional correction which provides a corrected speed instruction ⁇ c.
- the correction loop 30 also comprises a detector 33 of the saturation of the electric motor 4 from saturation information coming from the control element 21.
- the detector 33 makes it possible to monitor the occurrence of a saturation of the electric motor 4 and is arranged to activate the correction loop 30 in case of saturation of the electric motor 4.
- An adder 34 adds the nominal target speed ⁇ and the corrected speed reference v O to give O 1 speed setpoint.
- the speed reference ⁇ 1 is equal to the nominal speed instruction ⁇ .
- the correction loop 30 is activated by the detector 33 so that the nominal speed setpoint O is corrected by the corrector 32 that provides the corrected speed reference v O.
- the support 2 can be mounted in the frame 1 to be adjustable in position along two perpendicular axes, for example.
- the support 2 can be mounted in the frame 1 to be adjustable in location and bearing relative to the frame 1 by means of two motors and using either an angular inertial sensor with two sensitive axes or two inertial sensors angular sensitive axis.
- the invention is applicable to any pointing device arranged to orient any element in a predetermined direction.
- the support can be equipped with several inertial sensors: a first sensor used for the conventional stabilization control loop and a gyrometer for the correction loop.
- the method can be implemented continuously by adding an over-position loop absolute (or inertial).
- the implementation device is then devoid of the triggering and stopping elements of the function 33; there is no measurement of the reference by the estimator 31 and the speed instruction supplied by the operator is always corrected by the speed instruction from the corrector 32.
- This implementation considerably reduces the impact of the friction and thus increase the oscillation stabilization performance of the slave system. This method can therefore also be used as a friction compensator.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Electric Motors In General (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Control Of Position Or Direction (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1556304A FR3038377B1 (en) | 2015-07-03 | 2015-07-03 | MOTORIZED METHOD AND DEVICE FOR SCORING |
PCT/EP2016/065586 WO2017005656A1 (en) | 2015-07-03 | 2016-07-01 | Motor-driven aiming device and method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3317604A1 true EP3317604A1 (en) | 2018-05-09 |
EP3317604B1 EP3317604B1 (en) | 2019-06-05 |
Family
ID=55072765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16734376.3A Active EP3317604B1 (en) | 2015-07-03 | 2016-07-01 | Motor-driven aiming device and method |
Country Status (8)
Country | Link |
---|---|
US (1) | US10145654B2 (en) |
EP (1) | EP3317604B1 (en) |
CN (1) | CN107810380B (en) |
FR (1) | FR3038377B1 (en) |
IL (1) | IL256454B (en) |
RU (1) | RU2658555C1 (en) |
WO (1) | WO2017005656A1 (en) |
ZA (1) | ZA201800246B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112462773B (en) * | 2020-11-27 | 2022-09-02 | 哈尔滨工程大学 | Path tracking anti-saturation robust control method of under-actuated surface vessel |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3405599A (en) * | 1964-12-02 | 1968-10-15 | Cadillac Gage Co | Weapon stabilization system |
SE442442B (en) * | 1980-10-27 | 1985-12-23 | Bofors Ab | SERVICE SYSTEM INCLUDING A PROGRAMMABLE SIGNAL UNIT FOR ATTENDING VEHICLE FLIGHTS IN FIRE |
RU2045734C1 (en) * | 1991-12-23 | 1995-10-10 | Шаповал Иван Андреевич | Electric drive |
US5413028A (en) * | 1993-11-12 | 1995-05-09 | Cadillac Gage Textron Inc. | Weapon stabilization system |
EP1154219A1 (en) * | 2000-05-11 | 2001-11-14 | Oerlikon Contraves Ag | Method and apparatus for correcting dynamic errors of a gun barrel |
CH695248A5 (en) * | 2000-12-19 | 2006-02-15 | Contraves Ag | Method and apparatus for correcting errors shooting. |
FR2821928B1 (en) * | 2001-03-09 | 2003-08-29 | Sagem | SHOOTING CONDUCT SYSTEM |
US6820531B1 (en) * | 2003-12-01 | 2004-11-23 | Textron Systems Corporation | Positioning system with continuous-range inclination and rotation angles |
DE102013006939A1 (en) * | 2013-04-23 | 2014-10-23 | Rheinmetall Waffe Munition Gmbh | Adaptive acceleration limitation |
US9593913B1 (en) * | 2015-05-14 | 2017-03-14 | The United States Of America As Represented By The Secretary Of The Army | Digital positioning system and associated method for optically and automatically stabilizing and realigning a portable weapon through and after a firing shock |
CN204902666U (en) * | 2015-08-28 | 2015-12-23 | 四川建筑职业技术学院 | Stack system of full automatic fire |
CN105605967B (en) * | 2015-12-25 | 2017-09-01 | 广州市刑事科学技术研究所 | New shooting sample collection equipment |
-
2015
- 2015-07-03 FR FR1556304A patent/FR3038377B1/en active Active
-
2016
- 2016-07-01 CN CN201680037983.3A patent/CN107810380B/en active Active
- 2016-07-01 US US15/741,674 patent/US10145654B2/en active Active - Reinstated
- 2016-07-01 EP EP16734376.3A patent/EP3317604B1/en active Active
- 2016-07-01 RU RU2018103946A patent/RU2658555C1/en active
- 2016-07-01 WO PCT/EP2016/065586 patent/WO2017005656A1/en active Application Filing
-
2017
- 2017-12-20 IL IL256454A patent/IL256454B/en active IP Right Grant
-
2018
- 2018-01-12 ZA ZA2018/00246A patent/ZA201800246B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3317604B1 (en) | 2019-06-05 |
FR3038377B1 (en) | 2018-06-15 |
ZA201800246B (en) | 2019-07-31 |
IL256454A (en) | 2018-03-01 |
WO2017005656A1 (en) | 2017-01-12 |
US10145654B2 (en) | 2018-12-04 |
RU2658555C1 (en) | 2018-06-21 |
IL256454B (en) | 2018-08-30 |
US20180195837A1 (en) | 2018-07-12 |
FR3038377A1 (en) | 2017-01-06 |
CN107810380B (en) | 2019-03-22 |
CN107810380A (en) | 2018-03-16 |
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